A subspace-orbit randomized algorithm for quaternion tensor singular value decomposition based on Qt-product

•We investigate the third-order quaternion tensor singular value decomposition.•We propose a subspace-orbit randomized algorithm based on block Krylov iteration.•This algorithm can achieve the trade-off between computation time and accuracy.•We provide the deterministic and expected approximation er...

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Vydané v:	Applied mathematics and computation Ročník 512; s. 129780
Hlavní autori:	Liu, Yonghe, Wu, Fengsheng, Miao, Jifei, Li, Chaoqian
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	Elsevier Inc 01.03.2026
Predmet:	Qt-product Quaternion tensor singular value decomposition Randomized block Krylov iteration Subspace-orbit random projection Quaternion tensor singular value decomposition Randomized block Krylov iteration Qt-product Subspace-orbit random projection
ISSN:	0096-3003
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